Do the most important things.

Do the most important thing first in the morning. That’s when the vast majority of us have the most energy and the fewest distractions. Our energy reservoir diminishes as the day wears on, which is why it’s so difficult to get to the hardest work late in the day. Conversely, the more focused you are, the higher the quality of work you’ll do, and the more you’ll get done. I often get more important work done during the first 90 minutes of the morning than in the rest of the hours of the day put together.
Do one thing at a time.

With so much coming at us so relentlessly – emails, texts, people, and information – we assume the only way to get to it all is to juggle multiple tasks at the same time. In fact, moving between tasks creates something called “switching time.” When you shift attention from one focus of attention to another, the average time it takes to finish the first task increases by at least 25%.